VJ Lightspeed – Probably the fastest trail running shoe in the world. Ultralight racing shoe developed together with elite trail runners. It was designed to be the fastest trail running shoe in the world.
The shoe features our new SuperFOAMance midsole, which is made of hi-tech and ultralight nitrogen infused material that offers extreme cushioning and energy return.
This new foam is
- a modern,
- supercritical foam that is lighter,
- more responsive,
- more comfortable
- and more propulsive than a traditional EVA foam.
Technical Specifications:
- Activity – Trail running, Ultrarunning, Skyrunning, OCR
- Fit Scale – 3
- Gender – Unisex
- Stack height -29mm/23mm
- Drop – 6mm
- Outsole – Superior Contact
- Upper – Knitted one-piece
- Lug Depth – 3,5mm
- Weight – 220g (UK 8)
Compared to other foams, SuperFOAMance is more durable and does not rip as easily.
The midsole is finished with a branched composite plate which pushes the runner forward as a spring would do. The reason the plate is branched is to offer sideways flexibility for optimizing balance in uneven and everchanging terrain.
The Lightspeed features VJ’s famous Superior Contact -outsole made of our own butyl rubber compound, offering the best grip on the planet in any terrain.
Upper is light, breathable and durable one-piece upper that fits on the foot like a sock, while still offering enough of support for the runner.
VJ’s innovative Fitlock-system offers an optimal fit for the shoe by locking the foot from the arch. It also offers extra protection by protecting the arch from the impacts the foot is facing while running.
Designed to be used without insoles, but insoles will be shipped with the shoes!
Size Guide
▸ How to measure your foot
For the best fit, measure your foot at home before ordering. It takes 2 minutes.
1
Place a sheet of paper on the floor against a wall.
2
Put on the same socks you would wear with these shoes.
3
Stand on the paper with your heel touching the wall, foot straight.
4
Ask someone to mark the tip of your longest toe. Repeat both feet — use the longer measurement.
5
Measure heel to mark in cm. Use the size chart below to find your size. If between sizes, always go larger.
▸ Size chart
Foot (cm)
UK
EU
US Women
US Men
22.7
3
35.5
5.5
—
23.1
3.5
36
6
—
23.5
4
37
6.5
—
23.9
4.5
37.5
7
—
24.3
5
38
7.5
—
24.8
5.5
39
8
—
25.2
6
39.5
8.5
—
25.6
6.5
40
9
—
26.0
7
40.5
9.5
—
26.4
7.5
41
10
8.5
26.8
8
42
10.5
9
27.2
8.5
42.5
—
9.5
27.6
9
43
—
10
28.0
9.5
44
—
10.5
28.4
10
44.5
—
11
28.8
10.5
45
—
11.5
29.2
11
45.5
—
12
29.6
11.5
46
—
12.5
30.0
12
47
—
13
30.8
13
48
—
14
If you are between sizes, always choose the larger size.
▸ Shoe fit scale
VJ have graded the fit on all shoes from 1 to 5 to help you find the perfect fitting shoe.
1
2
3
4
5
Narrow
Wide
Grade 1 represents the most precise and narrow fit. Grade 5 has the widest fit.
The lower the number, the narrower the fit — essential for fast technical running where minimal foot movement matters. Higher numbers suit wider feet or those wanting extra comfort, and are often preferred on longer distances as feet tend to swell.
Size Guide
▸ How to measure your foot
For the best fit, measure your foot at home before ordering. It takes 2 minutes.
Place a sheet of paper on the floor against a wall.
Put on the same socks you would wear with these shoes.
Stand on the paper with your heel touching the wall, foot straight.
Ask someone to mark the tip of your longest toe. Repeat both feet — use the longer measurement.
Measure heel to mark in cm. Use the size chart below to find your size. If between sizes, always go larger.
▸ Size chart
| Foot (cm) | UK | EU | US Women | US Men |
|---|---|---|---|---|
| 22.7 | 3 | 35.5 | 5.5 | — |
| 23.1 | 3.5 | 36 | 6 | — |
| 23.5 | 4 | 37 | 6.5 | — |
| 23.9 | 4.5 | 37.5 | 7 | — |
| 24.3 | 5 | 38 | 7.5 | — |
| 24.8 | 5.5 | 39 | 8 | — |
| 25.2 | 6 | 39.5 | 8.5 | — |
| 25.6 | 6.5 | 40 | 9 | — |
| 26.0 | 7 | 40.5 | 9.5 | — |
| 26.4 | 7.5 | 41 | 10 | 8.5 |
| 26.8 | 8 | 42 | 10.5 | 9 |
| 27.2 | 8.5 | 42.5 | — | 9.5 |
| 27.6 | 9 | 43 | — | 10 |
| 28.0 | 9.5 | 44 | — | 10.5 |
| 28.4 | 10 | 44.5 | — | 11 |
| 28.8 | 10.5 | 45 | — | 11.5 |
| 29.2 | 11 | 45.5 | — | 12 |
| 29.6 | 11.5 | 46 | — | 12.5 |
| 30.0 | 12 | 47 | — | 13 |
| 30.8 | 13 | 48 | — | 14 |
If you are between sizes, always choose the larger size.
▸ Shoe fit scale
VJ have graded the fit on all shoes from 1 to 5 to help you find the perfect fitting shoe.
Wide
Grade 1 represents the most precise and narrow fit. Grade 5 has the widest fit.
The lower the number, the narrower the fit — essential for fast technical running where minimal foot movement matters. Higher numbers suit wider feet or those wanting extra comfort, and are often preferred on longer distances as feet tend to swell.
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